Arrhenius Acid Definition: Hydronium breaks up to yield an H+ in solution. Arrhenius Base Definition: Hydroxide is an OH-dissolved in water. Bronsted-Lowry Acid Definition: Hydronium is an H+ donor regardless of solution. Bronsted-Lowry Base Definition: Hydroxide attacks and accepts the H+ from hydronium.Lewis Acid Definition: The H+ on Hydronium accepts the attacking electron pair to form a bond.ronsted-Lowry Acid Definition: Hydronium is an H+ donor regardless of solution. Bronsted-Lowry Base Definition: Hydroxide attacks and accepts the H+ from hydronium. Lewis Acid Definition: The H+ on Hydronium accepts the attacking electron pair to form a bond.
Continued from page 2. Developed in the second-century BC, by the ancient Chinese, fireworks are the oldest form of rockets and the most simplistic. Originally fireworks had religious purposes but were later adapted for military use during the middle ages in the form of flaming arrows.. During the tenth and thirteenth centuries the Mongols and the Arabs brought the major component of these early rockets to the West: gunpowder.
This was 150 years earlier than the cannon was developed in the west. The Song people also used gunpowder to make fire lances, or flamethrowers, and anti-personnel mines (for which we might be less grateful!). By the end of the Song Dynasty the Chinese had invented multi-stage rockets. In a way this could be seen as the idea behind the rocket, which put a man on the moon. Joseph Needham also suggests that the idea of an explosion in a self contained cylinder inspired in time the internal combustion engine.